Manifold



F. PURDY MANIFOLD Feb. 24, v193].

Filed Nov. 9, 1929 A .UVE/ 7 f. Feder/CK M@ 5 Patentedreb. 24, 1.931

PURLDY,

'EREDER'ICK Y.

.PANY, oFrLiN'nviiiioiIV-ieaii,laooRPoRnTioNor ILLINQIS,

' i AY'Ap'piitaii'mi nietl Nptegater 9,1929. `Sinai-piro'. 405,915.1 11jv `This invention "relates to n iaiiifolds for internal combustion engines andA particularly to improved means for directing combusti,of'ii` mixtures iiitoand tlirouglitlie intake inaninfold for distribution to the engine cylinders.

My invention is particularly applicable in an arrangement where. the vertical mixture .outlet .end of a carburetei is connected with the inlet'to the manifold midway between its ends. .The main feature of my invention is the provision of a sheet'metal directioning Vand separating plate extending transversely j of the intake manifold at its inletpassage and projecting downwardly through said pasV` "sage and into the mixture outlet of the asso- 'ciated carbureter, with the platetwisted 90V intermediate its ends and with its lower edge curved to be s WGPt by the edge of the throttle valve' within the carbureter outlet passage,

`so that after passingthe throttle valvey the combustion mixtureA will be uniformlyy divided to travel in opposite directions through the manifold and to the cylinders and will be given a swirling action by the twisted plate,

I the plate preventing surging in the manifold and assuring more uniform distribution of the combustion mixture to the cylinders. t vAs shown on the drawings:

through the intake manifold vof an engine and theiipper outlet part of a carbureter associated therewith and showing my improved 1 separating anddistributing plate applied.

Figure Q'is a section on pla-ne iff-II,

- Y ure l.

Figure 3 is a section on plane Ill-III of Figure l,

letneok ll to which a carbureter l2 is secured at its upper end in the well-known manner. The throttle valvev shaft 13 supi ports the butterfly throttle valve 14 in the l mixture outlet endrl of the carbureter.

The directioning and separatingplate P Vis formed from a piece of sheet-metal originally' fiat, as shown in Figure 4,Y the Lipper end a of the plate being semi-circular to iit the bore of the manifold l0 and the lower edge offthe.platebeingarcuategto a y ftending downwardlythroughthe ,manifold'3-A n necknv andinto and'across the combustioni,mix?v ture outletgl .ofthe loarbureter withlitslower edge Z) in-alplane at tright anglesswitlithe throttle shaft.andlinmpositionto.be swept-byV i theedee-0tthe tlitttle disc iivhen'tlievelve ismovedlto opening position;` ,g Y

the 1 combustion. L mixture, drawnf .pasa the4 encoilnt,ers`` the lower fedgefof 'the separating '1 and directioning. .plate `P aiidf-.the mixture flow lis`separated-.or Vdivided to lflowv 'partly on ,one side" 4 and partly zon'ftli'egother side, of.

` With the structure and arrangement showin,V Y

the plate VP,the euryedforfltwist surfaces of;y the plate direotioninglthefuel toi'low'in eppoi,

site directions from the' upper V.end i of, the'v p late and ,th-rou gli the manifoldfor distribu;v tion tothe cylinders.t Thek arrangement is.

j particularly effective'foiassuringproper'di s= Figure l is a vertical diametral section tribution whenv thethrotltle ,is y only partly. open. The partly openfvalve'deflects the mixture: nflow ltoward fthe .,highl side of the valve.andinsweeping facros'slthe"underside. f

of the valve the streanifpicks upvffuel condene-.Kv sation :particles from the under side ofthe valve. rthe directioning plate were omitted;

suoli .rich mixturev would, leave at one side the carbureter woutlet and flowin-greate'r, part through the corres'ponding.sideofl the mani-f fold, the lotlie'rside ofthemanifoldfreceiving;

only. a jlalr 'militare :Heverlee .with separating and directionin'g plate. Y all :the

mixture streams, whetherprich or lean, are di vided .or bisected and the manifoldwill lre-` ceive the same Volume and richness ofjmix-r ture both sides ofthe plate. Y v

I thusproduce a very simple,inexpensivef, yet `highly eiicient means yforuniforinly sep# yaratingand directioning the flowi ofcombustionmixturefrom the carbureter .tothemaniV fold and ,for assuring. more uniform distributhroughout the range l. In combination, the intake manifold an explosive engine,a carbureter secured to said manifoldl with its outletiaxisatfa fright angle with the manifold axis, a throttle 'Valve in said outlet,'and a separating plate for the,- combustion mixture iow` interposed transversely in the manifold'and extending into the carbureter outlet with its edge in positionto` .be opened. n l V- l 2. In combina-tion'fthe intakemanifold' of a-n internalV combustion engine, a oarbureter sweptby the throttle valvef when i; seeured'to and communieatingvvith said man# ifold with its outlet axisj at right 'angles EtoA the axis of said manifold, a throttle valve in said outlet, and a separating plate -having upper and-4 lower ends at right angles wit'heachother'fthe upper'end of saidplate extending transversely Jacross and `dividing said manifold passage laterally, the lower end fof :said plate extending diametrally in the oarbureter outlet and 'with itsedge-,ourved valve'is opened; n l l "3. In comb'nation,ithentalrefmanifold:of

an "internal combustion engine, 1%;,Carbureter- L; j tor be sweptby thev throttle'valve 'when 'said dius of said throttle valve whereby said edge will be swept by the edge of the throttle valve when said valve is opened. f

l5. In Combination, the vintake manifold of an internal combustion engine, a carbureter communicating. with saidV manifold.- intermediate Lits-ends, a `throttle valvein said car- Y hureteroutlet, and a combustion mixture separating plat@ twisted 90i0p10vde ,upper` and 'lower "sections inclined at Iright anglesfv toy each other, the lower section extending diametrally acrossv the earbureter outlet 4above the throttle valve, and the upper seetionl extending diametrallyV across the bore of said manifold.

, I n ltestimony whei-eofzIhave` hereunto Sub- 4 scribedmy name at ChicagdvCook County,

FREDERICK -PURDx s Illinois.

communicating withsaid-'manifoldinterme-I diate its ends and. ywithlitsfaxi's 'at 'a rightl angle'iwith th'eaxisofthemanittolda'throt- A tie valve in' said` 0ut`let,"and"a separatingplate Y havingupper and; lower ends "in *planes 'at of said platefex'tendin-g 'di-ametrally in-"said `carljmreter outlet above the throttle valve; and

at right angles: with the throttle valve'axis, the lower edge of 'said plate being curved to be sweptf'by theedgeof thethrottle-valve when'thelvalve is'opened.`

4s. In oombi'n'atiom'the intake manifoldof an internal combustion' engine Vhaving'an inlet intermediate its ends, a earbureterseoured toV communicate with l'said inlet end 'with its outer axis at rightfangles'to thel axis of theV l, manifold bore,fa butterfly throttle valve-in the earbureter outlet,andaseparating and A direetioning'platefor fthe "combustion mixture delivered bythe Carbureter; said vplate i" beingtwisted`90`o"intermediate its en'ds where'-y by lits upper and Vlower'pvarts :are in planes of 90" withfeach other,` thenpper part of said plate extending diametrally across the boreY of the manifold to dividesa-id borelaterally, the lower end of said plate extending through thef'manifold inlet anddiametrally into the earbureter outlet andat' rightfangles to the throttle -valvee'axis` of rotation,v the n lower edge of saidlplate being curved toen areY of V a `radius'substantially-equalltoethe ra- 

